PIONEER SX-315 (WONT TURN ON)

i have a pioneer sx-315 surround sound system,i was watching tv when all of a sudden it turned off.i tryed to turn it back on but after 3 seconds it turns off again and again .....................and again.its driving me crazzzzy.i cant figure out what happened and i cant afford to take it to a person to fix it, would it be possible that you know what i can do to fix it.i would be forever grateful.

thanks
DAVID G.